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Recovery of Mercury in Solution¹

ABSTRACT

Mercury in the metallic or ionic form is a poisonous pollutant when added to the sewage system. Analytical laboratories frequently use solutions which contain mercury salts and proper disposal of the waste solutions is a problem. A recovery method is described in which aluminum releases its higher energy valence electrons to the mercury ions in solution producing aluminum ions and metallic mercury. The metallic mercury is recovered and the waste solution containing the aluminum ions can be poured down the drain.

Key Words: environmental pollution • replacement reaction • aluminum

¹ Joint contribution by the Plant Science Research Division, Agr. Res. Ser., USDA, the Beet Sugar Development Foundation, and the Colorado State University Experiment Station. Published with the approval of the Director of the Colorado State Univeristy Experiment Station as Scientific Series No. 1618.

² Research Chemist and Research Geneticist, Plant Science Research Division, Agr. Res. Ser., USDA, Fort Collins, Co. 80521.

Received for publication June 10, 1971.